Electronic battery testing device loose terminal connection detection via a comparison circuit

  • US 5,592,093 A
  • Filed: 05/05/1995
  • Issued: 01/07/1997
  • Est. Priority Date: 05/05/1995
  • Status: Expired due to Term
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First Claim
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1. A device for accessing condition of a battery, comprising:

  • a first connector for coupling to a first terminal of the battery;

    a second connector for coupling to the first terminal of the battery;

    a third connector for coupling to a second terminal of the battery;

    a fourth connector for coupling to the second terminal of the battery;

    electrical circuitry coupled to the first, second, third and fourth connectors for measuring a parameter of the battery and providing a measurement output;

    a bridge circuit having first and second inputs connected to the first and second connectors and third and fourth inputs connected to the third and fourth connectors; and

    output circuitry connected to a first and a second output of the bridge circuit providing an output in response to a voltage difference detected between the first output and the second output.

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